Climateby Month

Stowe, VT weather in September

NOAA 1991-2020 normals and daily records · Stowe all year

September in Stowe: mild, with frequent rain. Highs 70°F, lows 45°F, rain on about 12 days.

Normal high
70°F
Normal low
45°F
Wet days
12
3.1 in total
Muggy days
1
dew point 65°F+

How September changes from start to finish

Normal values at the start and end of September
September 1September 30
Normal high75°F64°F
Normal low50°F40°F
Chance of a wet day43%43%
Sunrise / sunset6:13 am / 7:27 pm6:47 am / 6:33 pm
Daylight13.2 h11.8 h

Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).

A typical September day

  1. 6 am51°Fdew point 48°F
  2. 9 am58°Fdew point 51°F
  3. Noon65°Fdew point 51°F
  4. 3 pm67°Fdew point 51°F
  5. 6 pm61°Fdew point 52°F
  6. 9 pm56°Fdew point 51°F

NOAA hourly normals (local standard time) from Barre Montpelier Airport (19 mi away); average wind 5 mph.

What kind of days to expect

  • Comfortable dayshigh 65-80°F and dew point under 60°F17 of 30
  • Hot dayshigh 90°F or more0 of 30
  • Muggy daysdaily mean dew point 65°F or more1 of 30
  • Wet daysat least 0.01 in of rain or melted snow12 of 30
  • Notable rainat least 0.10 in6 of 30
  • Freezing nightslow 32°F or below1 of 30
  • Snow on the groundsnow depth 1 in or more0 of 30

Average days per September, counted from daily records for each year 1991-2020.

Rain in September

Normal precipitation is 3.1 in; a dry September brings about 2.8 in and a wet one about 3.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.

How September varies from year to year

  • Warmest September, 1991-20202015: average high 78°F
  • Coolest September1997: average high 66°F
  • Wettest September1999: 5.7 in
  • Driest September2016: 0.9 in
  • Highest reading95°F (September 9, 2002)
  • Lowest reading23°F (September 29, 2000)

From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.

September compared with August and October

AugustSeptemberOctober
Normal high77°F70°F56°F
Normal low53°F45°F35°F
Wet days151215
Comfortable days15177
Daylight14.0 h12.5 h11.0 h

Highs change by -7°F from August and -14°F into October.

Nearby alternatives in September

How Stowe ranks in September

  • Normal high352nd warmest of 378 cities; 3rd of 3 in Vermont
  • Wet days345th driest of 378
  • Comfortable days44th most of 342

What to pack for Stowe in September

  • Layers – afternoons near 70°F but nights near 45°F
  • A rain jacket or umbrella – rain on about 12 days

Frost in September

The first fall frost typically comes around Sep 28; in 1 year in 10 it comes before Sep 14. All frost dates for Stowe.

Heating and cooling

September has 241 heating degree days and 22 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.

Questions

How hot is Stowe in September?

The normal high is 70°F and the normal low is 45°F. From 1991 to 2020 the hottest September reading was 95°F (September 9, 2002).

Does it rain a lot in Stowe in September?

About 12 days in September have at least 0.01 in of precipitation, and the normal total is 3.2 in. The wettest September in 1991-2020 was in 1999 (5.7 in); the driest was in 2016 (0.9 in).

Is September a good time to visit Stowe?

September ranks 4th of 12 months on our comfort score for Stowe (71 out of 100). It has about 17 comfortable days. The best months are May, June and September.

Where the numbers come from

  • Temperature, rain and frost dates: Morrisville Stowe State Airport (USW00054771), 5.9 mi NE of the city center, 732 ft . NOAA normals and daily records, 1991-2020.
  • Snowfall and snow depth: Burlington Intl Airport (USW00014742), 23 mi W of the city center, 330 ft (390 ft lower than the city). NOAA normals and daily records, 1991-2020.
  • Humidity and wind by hour: Barre Montpelier Airport (USW00094705), 19 mi SSE of the city center, 1,126 ft (406 ft higher than the city). NOAA normals and daily records, 1991-2020.
  • Daily humidity and wind: Edward F Knapp State Arpt (726145-94705), 19 mi SSE of the city center, 1,105 ft (385 ft higher than the city). Hourly observations, 1991-2020.
  • Not available for this location: cloud cover (no station close enough or similar enough in elevation).